Pipe coupling



FIG. 1 is a top, front perspective view of a first embodiment of a pipecoupling showing our new design;

FIG. 2 is a rear elevation thereof;

FIG. 3 is a right side elevation thereof; the left side is the same asthe right side;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a top, front perspective view of a second embodiment of a pipecoupling showing our new design;

FIG. 6 is a rear elevation thereof;

FIG. 7 is a right side elevation of FIG. 5; the left side elevation isrepresented by FIG. 3;

FIG. 8 is a bottom plan view of FIG. 5; the top plan view is representedby FIG. 3 is rotated 90° counterclockwise;

FIG. 9 is a top, front perspective view of a third embodiment of a pipecoupling showing our new design;

FIG. 10 is a rear elevation thereof;

FIG. 11 is a right side view thereof; the left side view is the same asthe right side; and,

FIG. 12 is a bottom plan view thereof.

The ornamental design for a pipe coupling, as shown and described.